Water is a resource of high demand used in agriculture and livestock, food washing, manufacturing and production industries, cleaning of structures, personal hygiene, etc.

Water is a crucial resource for all human activities. Even though the importance of water cannot be overemphasized, it has been constantly polluted and the quality of such a valuable resource has been gradually disintegrated.

The industrial and agricultural sector, in many cases, uses the water bodies as a space for discharging waste from their activities. This waste constantly inoculates enormous quantities of chemical particles with a high load of polluting materials, such as nitrates, phosphates and pesticides. According to the report - water pollution from agriculture: a global review - agriculture along with animal husbandry represents one of the largest sectors using water resource. Two-thirds of the water used by humans is for agricultural purposes.

Waste water is a major environmental problem. It irrationally contaminates ecosystems, drastically affects biodiversity (fauna and flora) including humans beings. The consequences of harmful policies and methods of exploration, inadequate governance, are often the main causes of decreasing the status of such a resource. This is a complex and multidimensional challenge.

According to the United Nations, more than 80 per cent of the world’s wastewater flows back into the environment without being treated. In some least-develop countries, this number exceeds 95 per cent. In the United States, for example, agricultural activities and livestock considered as the major source of contamination of rivers, streams, wetlands, lakes and groundwater.